<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../js/vue.js"></script>
</head>
<body>
    <div id="app">
        <p>{{hobby}}</p>
        <button v-on:click="change">把喝 变成 玩</button>
    </div>
    <script>
        const VM = new Vue({
            el:'#app',
            data(){
                return {
                    hobby:['吃','喝','睡']
                };
            },
            methods: {
                change(){
                    this.hobby.splice(1,1,'玩')
                }
            },
        });
    </script>
</body>
</html>